Revision as of 07:26, 21 October 2021

Thursday, October 21

Last 24h:
- No beam from 5:20pm Tuesday until ??? due to LCW/power problem
- Work done during the access:
  - position survey CCAL - DOESN'T require RadCon survey
  - correct shielding at the left (downstream) PS arm
  - magnetic field measurements around CCAL
  - 15 FCAL bases replaced and re-terminated one cable
  - faulty FDC chiller replaced
  - rebalanced the server power load on rack 13
Remaining issues:
- Tagger hodoscope time shifts
- communication with accel. w.r.t. tagger magnet - Paul Vasilauskis (Ops group leader): "I am putting out to my staff to contact the hall if they do need to touch the magnet and am looking into adding wording to the magnet screens"
- BCAL noise at 10 o'clock
- Bleedthrough
Plan:
- When the beam is back continue production at 200nA after the usual checks (radiation levels & harp scans)
- Continue running with the solenoid on & target full until Friday or later
- Pass change possible Friday or Saturday
- Expect some downtime Monday daytime for VIP tour

@@ Line 10: / Line 10: @@
 #** [https://logbooks.jlab.org/entry/3928742 rebalanced the server power load on rack 13]
 # Remaining issues:
+#* [https://logbooks.jlab.org/entry/3929404 Tagger hodoscope time shifts]
 #* communication with accel. w.r.t. tagger magnet - Paul Vasilauskis (Ops group leader): "I am putting out to my staff to contact the hall if they do need to touch the magnet and am looking into adding wording to the magnet screens"
 #* BCAL noise at 10 o'clock